We assume that the iFix MF70632_ppc.iso was downloaded from Fix Central and saved on the server aixnim in the /export/hmc directory. The /export/hmc directory must be shared for NFSv4 on the server aixnim and the NFS services must be active on the server.

The iFix can then be installed on the HMC hmc01 with the following command:

$ hmc updhmc hmc01 nfs://aixnim//export/hmc/MF70632_ppc.iso
INFO: using nfs://aixnim//export//hmc/MF70632_ppc.iso
Corrective service file offload from remote server in progress...
The corrective service file offload was successful. Continuing with HMC service installation...
Verifying Certificate Information
Authenticating Install Packages
Installing Packages...warning: /dump/hsc_install.images/images/install.d/java/ibm-java-sdk-17.0.5.0-ppc64le.rpm: Header V3 RSA/SHA256 Signature, key ID 9bce9629: NOKEY
Installing Packages...
The corrective service file was successfully applied. A mandatory reboot is required but was not specified on the command syntax.
Shared connection to 172.168.99.18 closed.
ERROR: remote HMC command returned an error (2)
$

Note: If the hostname (here aixnim) cannot be resolved on the HMC, the IP address must be used instead of the hostname.

If NFS from the server aixnim is the preferred method for installing iFixes and updates, then you should specify this in CorrectiveServiceLocation in one of the two files /opt/pwrcmps/etc/lpar.cfg or ~/.lpar.cfg:

...
CorrectiveServiceLocation nfs://aixnim//export/hmc
...

Note: We recommend using NFS for HMC updates.

After CorrectiveServiceLocation has been modified as shown, an update can be done simply by specifying the ISO file name:

$ hmc updhmc hmc01 MF70632_ppc.iso
INFO: using nfs://aixnim//export/hmc/MF70632_ppc.iso
Corrective service file offload from remote server in progress...
The corrective service file offload was successful. Continuing with HMC service installation...
Verifying Certificate Information
Authenticating Install Packages
Installing Packages...warning: /dump/hsc_install.images/images/install.d/java/ibm-java-sdk-17.0.5.0-ppc64le.rpm: Header V3 RSA/SHA256 Signature, key ID 9bce9629: NOKEY
Installing Packages...
The corrective service file was successfully applied. A mandatory reboot is required but was not specified on the command syntax.
Shared connection to 172.168.99.18 closed.
ERROR: remote HMC command returned an error (2)
$ 

Note: Of course, the ISO file must have been copied to the correct directory on the server aixnim beforehand.